I am using the sleep mode on the FR8003A chip. When I use the RTC wake-up feature, the Bluetooth stack functions correctly after waking up; however, when I use the button (GPIO pin) to wake the device, the Bluetooth stack malfunctions (the MCU wakes up upon pressing the button, but Bluetooth functionality is impaired thereafter). What is the issue? Could someone explain the correct procedure for entering and exiting sleep mode to ensure Bluetooth operates properly after wake-up?

]]>http://www.freqchip.net:4567/topic/1907/fr800x-power-management-unit-pmuRSS for NodeSat, 19 Sep 2026 18:09:52 GMTSat, 19 Sep 2026 11:46:52 GMT60I am using the sleep mode on the FR8003A chip. When I use the RTC wake-up feature, the Bluetooth stack functions correctly after waking up; however, when I use the button (GPIO pin) to wake the device, the Bluetooth stack malfunctions (the MCU wakes up upon pressing the button, but Bluetooth functionality is impaired thereafter). What is the issue? Could someone explain the correct procedure for entering and exiting sleep mode to ensure Bluetooth operates properly after wake-up?

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